Tractor



FIG. 1 is an elevated front perspective view of a tractor showing the new design.

FIG. 2 is a top view of the tractor design of FIG. 1.

FIG. 3 is a right side view of the tractor design of FIG. 1.

FIG. 4 is a left side view of the tractor design of FIG. 1.

FIG. 5 is a front view of the tractor design of FIG. 1; and,

FIG. 6 is a rear view of the tractor design of FIG. 1.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a tractor, as shown and described. 